JP2015160643A - container cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose a container cap capable of avoiding discomfort stimulation by reducing a contact degree by a tip-pointed rupture trace formed by rupture of a weakened bridge.SOLUTION: A container cap comprises: a base 1e fixed-held by fitting an annular groove 1b to a mouth neck part tip 2 of a container by putting a plug, by integrally connecting a top plate 1a for blocking up an extraction opening 2a of the container to inner-outer double cylindrical bodies 1c and 1d for forming the annular groove 1b opened downward; and an annular strip 3 for reinforcing fitting force to the mouth neck part tip 2a of the container by surrounding this base 1e. A plurality of weakened bridges 4 are provided for separably connecting the base 1e and the annular strip 3 by being arranged at an interval along the periphery of the base 1e between an outer peripheral wall of the base 1e and an inner peripheral wall of the annular strip 3. A protective projection 5 adjacent to the weakened bridge 4 is formed in at least one of the outer peripheral wall of the base 1e and the inner peripheral wall of the annular strip 3.

Description

  The present invention relates to a container cap that can be used as a so-called simple separation cap that can be easily separated and discarded by separating the container and the cap easily. A base that integrally connects a top plate to be closed to an inner / outer double cylinder that forms an annular groove that opens downward, and that the annular groove is fitted to the tip of the mouth neck of the container by a stopper and fixedly held. And an annular belt that surrounds the base via a plurality of weakening bridges and enhances the fitting force with respect to the distal end of the mouth and neck of the cylinder.

  This type of container cap is often used for drink-type beverage bottles, refill containers, and the like. For example, the one disclosed in Patent Document 1 is known.

  This is because the body part that fits into the inner wall of the bin mouth is crowned by the disk part, and the disk part and the annular handle part that is concentrically located outside of the disk part can be partly broken, partly integrated The body portion is pulled out from the bottle opening and opened by pulling up the annular handle portion.

Japanese Patent No. 4152717

  However, in this conventional container cap, as a result of pulling up the annular handle portion, the breakable connection portion of the breakable connecting portion is exposed to the outside, so that when the barrel portion is extracted from the bottle mouth, It cannot be said that the fracture mark does not touch the finger of the consumer, and there is a concern that the fracture mark gives an unpleasant stimulus to the finger.

  An object of the present invention is to solve such problems of the prior art. That is, the object of the present invention is to form a rupture with a sharp tip formed when the base of the container cap is broken by causing an annular band to be surrounded by a weakening bridge that becomes a breakable connecting portion. The object of the present invention is to provide a container cap that can effectively reduce the degree of contact with the finger of the consumer when the container is opened.

  In the container cap of the present invention, the top plate that closes the dispensing opening of the container is integrally connected to the inner and outer double cylinders that form the annular groove that opens downward, and the annular groove is containerized by a stopper. A base that is fitted and fixed to the distal end of the mouth and neck, and an annular band that surrounds the base and enhances the fitting force of the cylindrical body to the distal end of the mouth and neck. A plurality of weakenings that are arranged between the outer peripheral wall and the inner peripheral wall of the annular band at intervals in the circumferential direction along the circumference of the base so as to detachably connect the base and the annular band. A bridge is provided, and a protective protrusion adjacent to the weakened bridge is formed on at least one of the outer peripheral wall of the base and the inner peripheral wall of the annular band.

  Here, “adjacent to the weakened bridge” means not only literally adjacent but also a case where the bridge is separated from the weakened bridge by a few millimeters, or is integrally connected to the edge of the weakened bridge. Including cases where

  In addition, the “protective protrusion” can be a protrusion or rib, and not only when it is adjacent to the portion (either the base or the annular band) where the weakened bridge remains ruptured. It can also be provided on at least one of the upper side and the lower side.

  In the container cap having the above-described configuration, the protective projections are arranged alternately between the weakening bridges and sandwich the weakening bridges from both sides, and the weakening bridges are connected to the annular band. A thin-walled portion, a perforated hole or a slit-like cut end that separates the weakening bridge and the annular band, and an outer peripheral wall of the outer cylinder that forms the base. It is preferable that it is provided.

  In the container cap of the present invention, a connecting piece for connecting the base and the annular band inseparably to each other is provided between the base and the annular band, and the inner and outer double cylinders constituting the base are provided. A first weakened portion that extends along the upper and lower sides of the outer cylinder and divides the outer cylinder in the circumferential direction as the annular band is raised; and the first weakened section, A second weakened portion that is separated from the inner cylinder except for a part thereof can be formed. At this time, it is preferable that the first weakened portion and the second weakened portion are formed by thin portions.

  Further, the container cap according to the present invention connects the base and the annular band in a non-separable manner between the base and the annular band, and causes the base to be connected to the distal end of the mouth neck of the container. It is preferable to provide a connecting piece that is further detached.

  In the container cap according to the present invention, in particular, the base and the annular band are arranged between the outer peripheral wall of the base and the inner peripheral wall of the annular band at intervals in the circumferential direction around the base. A plurality of weakening bridges that detachably connect each other, and a protective projection adjacent to the weakening bridge is provided on at least one of the outer peripheral wall of the base and the inner peripheral wall of the annular band to weaken the annular band by causing it from the base. Even if the bridge is broken at a predetermined position and an inward or outward break mark with a sharp tip is generated at the break point, the break mark acts as a protective projection provided close to the bridge. Underneath, it is possible to reduce the degree of contact with the finger of the consumer who performs the plugging operation, and unpleasant irritation due to the fracture mark is avoided.

  Also, according to the container cap of the present invention, the annular groove opened downward between the double cylinders of the base integrally connected to the top plate closing the dispensing opening of the container is plugged with a stopper. It is fitted and fixed to the tip of the neck, and an annular band that surrounds the base and reinforces the fitting force to the mouth and neck of the container is provided. It can be made sufficiently high, and the sealing force of the container can be sufficiently increased.

  Moreover, according to the container cap of the present invention, the container cannot be opened by substantially releasing the fitting between the mouth neck portion of the container and the base unless the annular band is caused. Whether or not the container has been opened illegally before the regular opening of the container can be reliably determined visually.

  In the container cap according to the present invention, when the top plate has an outer edge portion that is integrally connected to the upper end portion of the inner cylindrical body of the base, the lower end portion of the inner cylindrical body can be easily deformed. Since it becomes an end, the inner cylinder can be easily pulled out from the mouth and neck of the container at the time of opening.

  On the other hand, when the top plate has an outer edge portion integrally connected to the lower end portion of the inner cylindrical body of the base, the lower end portion of the inner cylindrical body is supported from the inner side by the top plate. For this reason, it is possible to prevent the inner cylinder from falling down due to the heat history when the contents of the container are filled at high temperature, and to increase the resistance to liquid leakage.

  If the protective projections are located between the weakening bridges and are arranged alternately so that the weakening bridges are sandwiched from both sides, the fingers of the weakening bridges can be protected more effectively from the broken traces. Thus, it is possible to more advantageously reduce the degree of contact with the rupture mark of the consumer's finger.

  In addition, when a planned separation end that separates the weakening bridge and the annular band is provided at the connection portion of the weakening bridge with the annular band, the inward or outward fracture mark is applied to the annular band or the base as required. Can be formed.

  Here, when the protective protrusion is provided on the outer peripheral wall of the outer cylindrical body constituting the base, the required protective protrusion can be easily formed without major changes to the existing mold of the synthetic resin container cap. can do.

  According to the container cap of the present invention, the inner and outer double cylinders constituting the base are provided between the base and the annular band, and the connecting piece for connecting the base and the annular band inseparably is provided. A first weakened portion that extends along the upper and lower sides of the outer tube and that divides the outer tube in the circumferential direction when the annular belt is raised, and the outer tube is connected to the first weakened portion. Since the second weakened portion that separates from the inner cylinder except for a part thereof is formed, the annular band and the base are torn into a band shape when unplugged. At this time, the first weakened portion and the second weakened portion can be formed by thin portions, and the outer cylinder can be reliably separated from the inner cylinder and the unplugging force can be reduced.

  Furthermore, according to the container cap of the present invention, the base and the annular band are connected to each other between the base and the annular band in an inseparable manner, and the base is connected to the distal end of the container neck by causing the annular band. Since the connecting piece to be further detached is provided, the outer cylinder before and after unplugging is held in the same shape, and can be recapped (reuse of the cap).

(A), (b) is sectional drawing and top view which show the 1st Example of the container cap of this invention with the upper part of a container. It is an external appearance perspective view of the container cap shown in FIG. It is a principal part enlarged view of the cap for containers shown in FIG. It is an external appearance perspective view which shows the unplugging process of the cap for containers shown in FIG. It is an external appearance perspective view which shows the unplugging process of the cap for containers shown in FIG. (A), (b) is sectional drawing and top view which show the 2nd Example of the cap for containers of this invention with the upper part of a container. It is sectional drawing which shows the state which caused the annular belt | band | zone of the container cap shown in FIG. 6 with the upper part of a container. (A), (b) is sectional drawing and top view which show the 3rd Example of the container cap of this invention with the upper part of a container.

Embodiments of the present invention will be described below with reference to the drawings.
FIGS. 1A and 1B are views schematically showing a first embodiment of a container cap according to the present invention, and FIG. 2 is an external perspective view of the container cap shown in FIG.

  1 and 2, reference numeral 1 denotes a container cap. The container cap 1 forms a top plate 1a that closes the pouring opening 2a at the mouth-neck end 2 of the container, and an annular groove 1b that is formed by rolling the upper ends together to open downward, and has an inner lower end thereof. It has a base 1e constituted by inner and outer cylinders 1c and 1d connected to the connecting portion 1h (hereinafter, the inner cylinder is indicated by the inner cylinder 1c and the outer cylinder is indicated by the outer cylinder 1d). Yes. The base 1e is fixedly held by fitting the annular groove 1b between the inner cylinder 1c and the outer cylinder 1d to the mouth neck portion 2 of the container by a stopper, and the outer side of the base 1e An annular band 3 that surrounds the base 1e and enhances the fitting force of the inner cylinder 1c and the outer cylinder 1d with respect to the distal end 2 of the neck is provided.

  1 (a) and 1 (b), the mouth and neck tip 2 is formed by undercut fitting between the inner protrusion 1f of the outer tube 1d and the outer protrusion 2b of the mouth and neck tip 2. Is fitted and fixed between the inner cylinder 1c and the outer cylinder 1d.

  Further, the container cap 1 has a circumferential interval between the outer peripheral wall of the base 1e, that is, between the outer peripheral wall of the outer cylinder 1d and the inner peripheral wall of the annular band 3, along the periphery of the base 1e. Are provided, and a plurality of, in the figure, six weakening bridges 4 are provided to detachably connect the base 1e and the annular band 3 at the lower end side. Further, at least one of the outer peripheral wall of the outer cylinder 1d and the inner peripheral wall of the annular band 3, as shown in FIGS. 1 (a) and 1 (b), the outer cylinder 1d is positioned adjacent to the weakening bridge 4. In the figure, a total of seven protective protrusions 5 sandwiching the weakening bridge 4, for example, rib-shaped protective protrusions 5 extending in the circumferential direction are provided alternately with the weakening bridge 4.

  The protective projection 5 has a function of protecting the user's finger from a break mark with a sharpened tip of the weakening bridge 4 when the container cap 1 is removed from the mouth / neck tip 2 of the container. Avoid unpleasant irritation on the fingers due to scars.

  In this first embodiment, the top plate 1a that closes the dispensing opening 2a of the container has an outer peripheral edge that is concentric with the inner cylinder 1c, the outer cylinder 1d, and the annular peripheral wall 1g and the connecting portion 1h. As an example, the top plate 1a can be integrally connected to the upper end portion of the inner cylinder 1c, and the upper surface of the top plate 1a can be connected to the lower end portion of the inner cylinder 1c. Alternatively, it may be provided at a lower position, and this point is not limited to the illustrated one.

  In the first embodiment, the weakening bridges 4 are provided at six locations separated in the circumferential direction, and the planar shape of each weakening bridge 4 is a trapezoidal shape that tapers toward the annular band 3. However, the location where the weakening bridge 4 is disposed, the planar shape, and the like can be changed as appropriate.

  Furthermore, in the first embodiment, a total of seven protective protrusions 5 extending in a rib shape in the circumferential direction are provided at positions sandwiching the weakening bridge 4, but the number of the protective protrusions 5 is adjacent to the weakening bridge 4. As long as it exists, various changes can be made. Further, the form of the protective protrusion 5 can be a convex shape, and the protective protrusion 5 can be provided on at least one of the upper side and the lower side of the weakening bridge 4.

  The planar shape of the weakening bridge 4 is a trapezoidal shape that tapers toward the annular band 3 as shown in FIG. 1 (b), and its cross-sectional shape gradually increases toward the annular band 3 as shown in FIG. When the thinned one is applied, the planned split end 4a of the weakened bridge 4 is located at a connection site with the annular band 3 (boundary between the annular band 3 and the weakened bridge 4), and the weakened bridge 4 is disconnected when plugged. Since the fracture mark remains on the outer cylinder 1d side, the protective protrusion 5 is provided on the outer peripheral wall of the base 1e, that is, the outer cylinder 1d.

  In addition, the division | segmentation scheduled end 4a of the weakening bridge 4 is good also as a connection part with the outer cylinder 1d, and in that case, since the fracture | rupture trace of the weakening bridge 4 with the pointed tip remains on the inner peripheral wall of the annular belt 3, it protects. The protrusion 5 is provided on the inner peripheral wall of the annular band 3. In addition to being able to be easily formed by changing the planar shape of the weakened bridge 4 by appropriately changing the width dimension and thickness of the weakening bridge 4 (change of the width dimension, etc.) It may be formed by providing perforated holes or slit-like cuts, but this is not a limitation.

  Reference numeral 6 in FIGS. 1 and 2 is a connecting piece that connects the annular band 3 and the outer cylinder 1d so that they cannot be broken at one place in the circumferential direction, that is, cannot be separated. The annular band 3 supports the outer cylinder 1d of the base 1e from the outside via the connecting piece 6 and the weakening bridge 4, and regulates the diameter of the outer cylinder 1d. Strengthen the mating force.

  The above-mentioned annular band 3 has a connecting piece 6 formed with respect to its central axis. The outer peripheral surface opposed in the diametrical direction is provided with, for example, a lip-shaped planar finger-hanging portion 3a protruding outward in the radial direction. Provided.

  In the first embodiment shown in FIGS. 1 and 2, it is visually confirmed whether or not the outer cylinder 1 d has been unplugged so that it is impossible to return the annular band 3 to its original shape after the plug has been unplugged. Therefore, in this embodiment, the outer cylinder 1d extends in the vertical direction and the outer cylinder 1d is divided in the circumferential direction when the annular band 3 is raised. And a second weakened portion 8 that is connected to the first weakened portion 7 and separates the outer cylinder 1d from the inner cylinder 1c except for a part thereof.

  In the container cap having such a configuration, as shown in FIGS. 4 and 5, the outer cylinder 1 d is divided in the circumferential direction as shown in FIG. 4 with the first weakened portion 7 as a boundary, Subsequently, as shown in FIG. 5, the second weakened portion 8 is separated from the inner cylinder 1 c as a boundary. As a result, most of the outer cylinder 1d is separated from the mouth neck portion tip 2 of the container, and the annular band 3 cannot be returned to its original shape, so it is easy to determine whether or not the container has been opened. Can be determined.

  The first weakened portion 7 and the second weakened portion 8 can be formed by thin portions, but can also be formed by slit-like cuts, perforated holes, etc. Can be arbitrarily selected.

  In such a container cap, in order to smoothly cause the annular band 3 and the circumferential division by the first weakened portion 7 of the outer cylinder 1d associated therewith, the first weakened portion 7 is It is good to provide in the adjacent site | part of the connection piece 6 (the outer cylinder 1d and the connection piece 6 are maintained in the state connected). Further, the outer cylinder 1d and the inner cylinder 1c may be completely separated by the second weakening portion 8, but in this case, the inner cylinder 1c and the top plate 1a connected to the inner cylinder 1c and the top plate 1a at the time of unplugging are provided. In order to pour out the contents, another operation for removing the inner cylinder 1c together with the top plate 1a is required. For this reason, it is preferable to provide a bridge 9 as shown in FIGS. 1, 3 and 4 for locally connecting the outer cylinder 1d and the inner cylinder 1c at the cut end of the second weakening section 8. In other words, the end of the second weakening unit 8 is provided with an uncut margin that does not reach the starting end. Due to the presence of the bridge 9, the inner cylinder 1c is maintained in a state of being connected to the annular band 3 via the outer cylinder 1d and the connecting piece 6, and the inner cylinder 1c can be removed by simply pulling up the annular band 3. At the same time, the container can be detached from the mouth / neck tip 2 of the container.

  FIGS. 6A and 6B are a cross-sectional view and a plan view schematically showing a second embodiment of the container cap (formed of synthetic resin or the like) of the present invention together with the upper part of the container. These are sectional drawings shown in the state (unplugged state) which caused the annular belt 3 in the container cap shown in FIGS. 6 (a) and 6 (b).

  In the figure, the same parts as those in the previous embodiment are denoted by the same reference numerals. The container cap 1 according to the second embodiment is formed by integrally connecting the first weakened portion 7 and the second weakened portion 8 and the outer peripheral edge of the top plate 1a to the upper end of the inner cylinder 1c. This is different from the previous first embodiment.

  Also in the second embodiment, the weakening bridge 4 and the protective projection 5 are formed in the same manner as in the first embodiment, as shown in FIG. 6B. Here, it is needless to say that the mode of formation of the weakening bridge 4 and the protective protrusion 5 can be appropriately changed as necessary as described above. Further, the splitting planned end 4a of the weakening bridge 4 can be specified by appropriately changing the width dimension and thickness in the same manner as in the first embodiment, or a slit-like cut or a perforated perforation is provided. It can also be specified by applying.

  According to the second embodiment, the container cap 1 is directed downwardly between the inner cylinder 1c and the outer cylinder 1d of the double cylinder of the base 1e integrally connected to the top plate 1a that closes the dispensing opening 2a of the container. An annular groove 1b that is open is fitted into the mouth neck portion 2 of the container and fixed by a stopper, and the base 1e is surrounded by a fitting force with respect to the mouth neck portion 2 of the container. Reinforcing (suppressing expansion of the diameter of the outer cylinder 1d when the base 1e is plugged into the neck 2 of the mouth and neck of the container) is provided, so that the holding force to the container is sufficiently increased. Therefore, the sealing force of the container can be sufficiently increased.

  Further, according to the container cap 1 of the second embodiment, as shown by arrows in FIG. 7, the plurality of weakening bridges 4 of the annular band 3 are broken to cause the annular band 3. By pulling, one end portion (right end portion in the figure) of the base 1e is pulled up through the connecting piece 6, and by this pulling, the undercut fitting between the mouth neck portion 2 of the container and the base 1e is performed from the one end side. It is released and the container can be opened. At that time, the plurality of weakening bridges 4 connecting the base 1e and the annular band 3 are already broken, and the fitting force of the outer cylinder 1d with respect to the mouth / neck tip 2 of the container is reduced, so the mouth / neck tip 2 of the container and the base The container can be unplugged by easily releasing the fitting with 1e.

  Moreover, according to the container cap 1 of the second embodiment, the annular band 3 reinforces the fitting force with respect to the mouth neck portion 2 of the container before unplugging. The container cannot be opened unless the band 3 is caused. Therefore, it is judged visually whether the container has been opened illegally before the container is properly opened by the presence or absence of the annular band 3. be able to. Further, if the weakening bridge 4 is not provided at the corresponding portion of the finger-hanging portion 3a, the base 1e can be easily lifted when the cap is opened, and the operability can be improved.

  Furthermore, according to the container cap 1 of the second embodiment, the top plate 1a has the outer edge part integrally connected to the upper end part of the inner cylinder 1c of the base 1e, so that the lower end part of the inner cylinder 1c is deformed. Since it becomes an easy free end part, the inner cylinder 1c can be easily extracted from the mouth and neck of the container at the time of unplugging. In particular, the second embodiment has an advantage that the container cap 1 can be reused since the base 1 can maintain the initial shape as it is when the container cap 1 is unplugged.

  8 (a) and 8 (b) are a sectional view and a plan view showing the third embodiment of the container cap according to the present invention together with the upper part of the container, in which the same parts as in the previous embodiment are the same. It shows with the same code | symbol.

  This third embodiment differs from the previous second embodiment only in that the top plate 1a has an outer edge portion integrally connected to the lower end portion of the inner cylinder 1c of the base 1e. It has the same configuration as the previous second embodiment.

  According to the container cap 1 of the third embodiment, the same effects as those of the second embodiment can be achieved except that the lower end portion of the inner cylinder 1c does not become a deformable free end portion. In addition, since the lower end portion of the inner cylinder 1c is supported from the inside by the top plate 1a, for example, even when so-called high temperature filling is performed in which a container is filled with a liquid having a temperature of 65 ° C. or higher, the inner cylinder due to thermal history is used. The internal fall of 1c can be prevented, and the resistance against liquid leakage can be increased.

  The container cap 1 of the third embodiment shown in FIGS. 8A and 8B is also provided with the weakened bridge 4 and the rib-shaped protective protrusion 5 adjacent to the weakened bridge 4, so that the cap 1 is attached to the container. When removing from the neck 2 of the mouth and neck, it is possible to reduce the extent to which the user's finger is touched by the fractured trace having the sharpened tip of the weakened bridge 4, and the unpleasant stimulus is effectively avoided by the protective protrusion 5. be able to.

  As described above, the base 1e and the annular band 3 are connected to each other between the base 1e and the annular band 3 in a non-separable manner, and the connecting piece 6 of the annular band 3 is provided. Etc., the connecting piece 6 becomes unnecessary.

  Further, in the container cap 1 having such a configuration, the protective protrusions 5 are provided between the weakening bridges 4 so as to be alternately arranged so that the weakening bridges 4 are sandwiched from both sides. There exists an advantage which can manufacture the cap 1 for containers easily below.

  Further, when the protective projection 5 is provided on the outer cylinder constituting the base 1e, that is, on the outer peripheral wall of the outer cylinder 1d, the container cap 1 can be attached to the existing mold by a small amount of processing. It can be manufactured easily and inexpensively.

  ADVANTAGE OF THE INVENTION According to this invention, the cap for containers which can reduce effectively the extent which the fracture | rupture trace of a weakened bridge touches a finger can be provided.

DESCRIPTION OF SYMBOLS 1 Cap for container 1a Top plate 1b Annular groove 1c Inner cylinder 1d Outer cylinder 1e Base 1f Inner cylinder protrusion 1g Annular peripheral wall 1h Connection part 2 Mouth neck part tip 2a Outlet opening 2b Outer periphery protrusion 3 Annular belt 3a Finger hook part 4 Weak bridge 4a Scheduled end 5 Protective protrusion 6 Connecting piece 7 First weakened portion 8 Second weakened portion 9 Bridge

Claims (7)

A top plate that closes the dispensing opening of the container is integrally connected to the inner and outer double cylinders that form an annular groove that opens downward, and the annular groove is fitted to the tip of the neck of the container by a stopper. A container cap comprising: a base that is fixed and held; and an annular band that surrounds the base and enhances the fitting force of the cylindrical body to the distal end of the mouth and neck,
A plurality of weakening bridges arranged between the outer peripheral wall of the base and the inner peripheral wall of the annular band with a space around the base cap and detachably connecting the base and the annular band. Provided,
A cap for a container, wherein a protective projection adjacent to the weakening bridge is formed on at least one of the outer peripheral wall of the base and the inner peripheral wall of the annular band.   2. The container cap according to claim 1, wherein the protective protrusions are arranged between the weakening bridges and are alternately arranged to sandwich the weakening bridges on both sides.   The said weakening bridge is a cap for containers described in Claim 1 or 2 which has the division | segmentation planned end which cuts off this weakening bridge and this annular band in the connection part with the said annular band.   The container cap according to any one of claims 1 to 3, wherein the protective protrusion is provided on an outer peripheral wall of an outer cylindrical body constituting the base.   A connecting piece for connecting the base and the annular band inseparably to each other is provided between the base and the annular band, and the outer cylinder of the inner and outer double cylinders constituting the base extends vertically. A first weakened portion that extends in the circumferential direction as the annular band is raised, and is connected to the first weakened portion, with the outer cylinder being partially removed, and the inner cylinder The container weak cap according to any one of claims 1 to 4, wherein a second weakened portion is formed to be separated from the container cap. The container cap according to claim 5, wherein the first weakened portion and the second weakened portion are formed by thin portions.
Sealing stopper.   Between the base and the annular band, there is provided a connecting piece for connecting the base and the annular band inseparably and causing the base to be detached from the front end of the neck of the container by causing the annular band. The container cap according to any one of claims 1 to 4, wherein

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